class_docstr: RNG provider that always provides the same RNG
code: def __call__(self, *keys) -> np.random.Generator:
      return self.rng
  
file_path: lkpy/lenskit/util/random.py
imports: import numpy
  import seedbank
label_desc: Use image node_id 2 for calling the FixedRNG obj's underlying member method code with example usage: obj.__call__() and returns: self